package com.kuang.dao.user;

import com.kuang.dao.BaseDao;
import com.kuang.pojo.Role;
import com.kuang.pojo.User;
import com.mysql.jdbc.StringUtils;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class UserDaoImpl implements UserDao{
    //得到要登录的用户
    public User getLoginUser(Connection connection, String userCode) throws SQLException {

        PreparedStatement pstm = null;
        ResultSet rs = null;
        User user = null;

        if (connection!= null){
            String sql = "select * from smbms_user where userCode=?";
            Object[] params = {userCode};

            rs = BaseDao.execute(connection,pstm,rs,sql,params);

            if (rs.next()){
                user = new User();
                user.setId(rs.getInt("id"));
                user.setUserCode(rs.getString("userCode"));
                user.setUserName(rs.getString("username"));
                user.setUserPassword(rs.getString("userPassword"));
                user.setGender(rs.getInt("gender"));
                user.setBirthday(rs.getDate("birthday"));
                user.setPhone(rs.getString("phone"));
                user.setAddress(rs.getString("address"));
                user.setUserRole(rs.getInt("userRole"));
                user.setCreatedBy(rs.getInt("createdBy"));
                user.setCreationDate(rs.getTimestamp("creationDate"));
                user.setModifyBy(rs.getInt("modifyBy"));
                user.setModifyDate(rs.getTimestamp("modifyDate"));
            }
            BaseDao.closeResource(null,pstm,rs);
        }
        return user;
    }

    //修改当前用户密码
    public int updatePwd(Connection connection, int id, String password) throws SQLException {

        System.out.println("UserServlet:"+password);

        PreparedStatement pstm = null;
        int execute = 0;

        if (connection != null){
            String sql = "update smbms_user set userPassword = ? where id = ?";
            Object params[] = {password,id};
            execute = BaseDao.execute(connection,pstm,sql,params);

        }
        BaseDao.closeResource(null,pstm,null);
        return execute;
    }

    //根据用户名或者角色查询用户总数
    public int getUserCount(Connection connection, String username, int userRole) throws SQLException {
        PreparedStatement pstm = null;
        ResultSet rs = null;
        int count = 0;

        if (connection!=null){
            StringBuffer sql = new StringBuffer();
            //append = 拼接
            sql.append("select count(1) as count from smbms_user u,smbms_role r where u.userRole = r.id");
            ArrayList<Object> list = new ArrayList<Object>();//存放我们的参数

            if (!StringUtils.isNullOrEmpty(username)){
                sql.append(" and u.userName like ?");
                list.add("%"+username+"%"); //index:0
            }

            if (userRole>0){
                sql.append(" and u.userRole = ?");
                list.add(userRole); //index:1
            }

            //怎么把List转换为数组
            Object[] params = list.toArray();

            System.out.println("UserDaoImpl -> getUserCount:"+sql.toString());//输出最后完整的SQL语句

            rs =  BaseDao.execute(connection,pstm,rs,sql.toString(),params);

            if (rs.next()){
                count = rs.getInt("count");//从结果集中获取最终的数量
            }
            BaseDao.closeResource(null,pstm,rs);
        }
        return count;
    }

    //通过条件查询-userList
    public List<User> getUserList(Connection connection, String userName, int userRole, int currentPageNo, int pageSize) throws Exception {
        PreparedStatement pstm = null;
        ResultSet rs = null;
        List<User> userList = new ArrayList<User>();

        if (connection!=null){
            StringBuffer sql = new StringBuffer();
            //append = 拼接
            sql.append("select u.*,r.roleName as userRoleName from smbms_user u,smbms_role r where u.userRole = r.id");
            List<Object> list = new ArrayList<Object>();//存放我们的参数

            if (!StringUtils.isNullOrEmpty(userName)){
                sql.append(" and u.userName like ?");
                list.add("%"+userName+"%"); //index:0
            }

            if (userRole>0){
                sql.append(" and u.userRole = ?");
                list.add(userRole); //index:1
            }
            sql.append(" order by creationDate DESC limit ?,?");
            currentPageNo = (currentPageNo-1)*pageSize;
            list.add(currentPageNo);
            list.add(pageSize);
            //怎么把List转换为数组
            Object[] params = list.toArray();

            System.out.println("sql---->"+sql.toString());//输出最后完整的SQL语句

            rs =  BaseDao.execute(connection,pstm,rs,sql.toString(),params);

            while (rs.next()){
                User _user = new User();
                _user.setId(rs.getInt("id"));
                _user.setUserCode(rs.getString("userCode"));
                _user.setUserName(rs.getString("username"));
                _user.setGender(rs.getInt("gender"));
                _user.setBirthday(rs.getDate("birthday"));
                _user.setPhone(rs.getString("phone"));
                _user.setUserRole(rs.getInt("userRole"));
                _user.setUserRoleName(rs.getString("userRoleName"));
                userList.add(_user);
            }
            BaseDao.closeResource(null,pstm,rs);
        }
        return userList;
    }

    public int add(Connection connection, User user) throws Exception {
        PreparedStatement pstm = null;
        int updateNum = 0;
        if (connection!=null){
            String sql = "insert into smbms_user (userCode,userName,userPassword," +
                    "userRole,gender,birthday,phone,address,creationDate,createdBy) " +
                    "values(?,?,?,?,?,?,?,?,?,?)";
            Object[] params = {user.getUserCode(), user.getUserName(), user.getUserPassword(),
                    user.getUserRole(), user.getGender(), user.getBirthday(),
                    user.getPhone(), user.getAddress(), user.getCreationDate(), user.getCreatedBy()};
            updateNum = BaseDao.execute(connection, pstm, sql, params);
            BaseDao.closeResource(null,pstm,null);
        }
        return updateNum;
    }

    public User userCodeExits(Connection connection, String userCode) throws Exception {
        PreparedStatement pstm = null;
        ResultSet rs = null;
        User _user = null;
        if (connection!=null){
            String sql = "select u.* from smbms_user u where u.userCode like ?";
            Object[] params = {userCode};
            rs = BaseDao.execute(connection,pstm,rs,sql,params);
            while (rs.next()){
                _user = new User();
                _user.setId(rs.getInt("id"));
                _user.setUserCode(rs.getString("userCode"));
                _user.setUserName(rs.getString("username"));
                _user.setGender(rs.getInt("gender"));
                _user.setBirthday(rs.getDate("birthday"));
                _user.setPhone(rs.getString("phone"));
                _user.setUserRole(rs.getInt("userRole"));
                _user.setUserRoleName(rs.getString("userRoleName"));
            }
            BaseDao.closeResource(null,pstm,rs);
        }
        return _user;
    }

}
